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Finding the Third Proportional to 80,959.50 and 178,017.75

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Solution

The third proportional to 80,959.50 and 178,017.75 is: 391,434.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,959.50 : 178,017.75 = 178,017.75 : x
  2. Step 2: Convert to fraction form
    80,959.50/178,017.75 = 178,017.75/x
  3. Step 3: Cross multiply
    80,959.50x = 178,017.75 × 178,017.75
  4. Step 4: Simplify right side
    80,959.50x = 31,690,319,315.06
  5. Step 5: Solve for x
    x = 31,690,319,315.06/80,959.50
  6. Step 6: Final answer
    x = 391,434.23

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.